How about the driver issues with USB. Did Kingwa say anything about that?

I know he was working with who ever developed the driver. What was the out come?

Thats the Tenor 8022 USB chipset. With the Master 7 dac, he's using the USB32 chipset which apparently has a much mature USB driver implementation. Kingwa has requested the manufacturer to remove non required functionalities from the USB32 driver primarily focusing specifically on lowering jitter.

Also another new finding for me (maybe already well known for other experienced head-fiers): according to Kingwa, the PCM1704U-K dac chip support 192KHz sample rate at 8x over-sampling, which is higher than the official specification (official data sheet here: http://www.ti.com/product/pcm1704). And since the S/PDIF decoder in Master-7 (I don't know the model) is different from that of Reference 7.1 (DIR9001), this enables the Master-7 to accept 192KHz sample rate.

So, wire from Pin 1 (offramp) needs to connect to wire from Pin 5 (Master7) as an example?

Otherwise, hoping that Kingwa will release a source player that will have an I2S output that is compatible with the source input (4) on the Master7? If not, then users will probably have to make a custom RJ-45 cable and find a suitable source that outputs 3.3v's?

So, wire from Pin 1 (offramp) needs to connect to wire from Pin 5 (Master7) as an example?

Otherwise, hoping that Kingwa will release a source player that will have an I2S output that is compatible with the source input (4) on the Master7? If not, then users will probably have to make a custom RJ-45 cable and find a suitable source that outputs 3.3v's?

Customers if want especial configure of the I2S input is easy change before shipping, we just want to change the inside wires connect , this is also easy change by users within few minutes without soldering .

Customers if want especial configure of the I2S input is easy change before shipping, we just want to change the inside wires connect , this is also easy change by users within few minutes without soldering .

The level compatible from 3.3 .

Thanks Kingwa for the confirmation. Could you show us on the Audio GD site how to do these changes by the user? I suspect some users/customers may have bought the Master 7dac without realising how to do this.

Your easiest option is to get a DI-Dsp and get Kingwa to do an i2s output. So bnc out from the cd7fv to bnc input on the DI, then I2s output to the Master 7. The best bit is that the pin alignment will be compatible to the Master 7. All u need is a short length. RJ45 cable.